I should have also added that the cam has a revised profile. You could lower the Vtec engagement RPM with a V-AFC, but the car will run horrible. In reguards to more lift at lower RPMS....Idle quality would suffer tremendously,emissions would be horrible and engine turque/response would decrease dramatically. The low cam profile is designed for good gas mileage, good idle, good throtle response and more torque (relative too a Honda!). With many Vtec cams, the vtec engagment point must be raised to prevent power from falling off before and during the changeover. to the higher cam profile.[/QB]</font>I think he meant use the v-afc to jack the vtec point higher in the rpm band on a turbo application. (maybe not ) Yes this can be done since the majority of the valve overlap is in "vtec range", but then remember you are essentially using only the smaller lobes on the cam, in a sense wasting the larger profiled lobes. The best solution in my opinion is a combonation of the v-afc and cam gears.